html,body{
	height:100%
}
.csb-phone{display: none;}
.tools li.csb{
 text-indent: 0;
 color: #1D7595;
 width: 60px;
 height: 28px;
 margin-top: 10px;
 line-height: 26px;
 box-sizing: border-box;
 text-align: center;
 margin-left: 20px;
 border-radius: 5px;
 border: 1px solid;
}


.banner_src {
  position: absolute;
  width: 100%;
  height: 100%;
}

.swiper-wrapper img {
  display: block;
  width: 100%;
}

.arrow-btn {
  position: absolute;
  top: 50%;
  margin-top: -50px;
  font-size: 50px;
  display: block;
  line-height: 100px;
  background: url(../images/20180724105025.png);
  text-align: center;
  color: #fff;
  font-family: "宋体";
  width: 40px;
}

.btn-left {
  left: 0px;
}

.btn-right {
  right: 0px;
}

.arrow-btn:hover {
  color: #fff;
}